DE60201055D1 - Hydraulic actuator for locking assembly - Google Patents

Hydraulic actuator for locking assembly

Info

Publication number
DE60201055D1
DE60201055D1 DE60201055T DE60201055T DE60201055D1 DE 60201055 D1 DE60201055 D1 DE 60201055D1 DE 60201055 T DE60201055 T DE 60201055T DE 60201055 T DE60201055 T DE 60201055T DE 60201055 D1 DE60201055 D1 DE 60201055D1
Authority
DE
Germany
Prior art keywords
hydraulic
pressure
actuator
hydraulic fluid
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE60201055T
Other languages
German (de)
Other versions
DE60201055T2 (en
Inventor
Laurentius Andreas Ger Mentink
Willem Herman Masseling
T Veen Daniel Van
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Enerpac Tool Group Corp
Original Assignee
Actuant Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Actuant Corp filed Critical Actuant Corp
Application granted granted Critical
Publication of DE60201055D1 publication Critical patent/DE60201055D1/en
Publication of DE60201055T2 publication Critical patent/DE60201055T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D19/00—Door arrangements specially adapted for rail vehicles
    • B61D19/02—Door arrangements specially adapted for rail vehicles for carriages
    • B61D19/026—Safety devices for preventing passengers from being injured by movements of doors or variations in air pressure
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/40—Safety devices, e.g. detection of obstructions or end positions
    • E05F15/49—Safety devices, e.g. detection of obstructions or end positions specially adapted for mechanisms operated by fluid pressure, e.g. detection by monitoring transmitted fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/15—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor with special provision for automatic return
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/51—Application of doors, windows, wings or fittings thereof for vehicles for railway cars or mass transit vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • F15B2211/20515—Electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20561—Type of pump reversible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • F15B2211/50527—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves using cross-pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5153—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a directional control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/61—Secondary circuits
    • F15B2211/613—Feeding circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/632—Electronic controllers using input signals representing a flow rate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6651—Control of the prime mover, e.g. control of the output torque or rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/77—Control of direction of movement of the output member
    • F15B2211/7716—Control of direction of movement of the output member with automatic return
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/86—Control during or prevention of abnormal conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/86—Control during or prevention of abnormal conditions
    • F15B2211/8603—Control during or prevention of abnormal conditions the abnormal condition being an obstacle

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

A hydraulic actuating device for a closure assembly, for example of a vehicle, which closure assembly comprises a closure element which can be moved between a closed position, in which the closure element closes off an opening, and an opened position. The hydraulic actuating device comprises a hydraulic actuator (15) for moving the closure element, which actuator has a housing having a closing chamber (26) and an opening chamber (27). Further provided are a hydraulic pump (30) having an associated electric pump motor (31) and a reservoir (37) for hydraulic fluid. The hydraulic actuating device further comprises a first pressure-limit valve (40), which is connected to the opening chamber (27), and a second pressure-limit valve (41), which is connected to the closing chamber (26). Control means (50) are further provided for controlling the supply of hydraulic fluid under pressure to the opening chamber (27) or to the closing chamber (26) of the actuator. A hydraulic flow sensor (45) connected to the control means (50) is provided at each pressure-limit valve, such that the one or more hydraulic flow sensors detect the presence of a flow of hydraulic fluid through the pressure-limit valve to the reservoir. The control means (50) are adapted - if a flow sensor detects a flow of hydraulic fluid - to reverse the supply of hydraulic fluid under pressure to the actuator, so that the opening motion is changed to a closing motion or vice versa. <IMAGE>
DE60201055T 2001-10-01 2002-09-27 Hydraulic actuator for a closing arrangement Expired - Lifetime DE60201055T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1019067A NL1019067C2 (en) 2001-10-01 2001-10-01 Hydraulic operating device for a closing assembly.
NL1019067 2001-10-01

Publications (2)

Publication Number Publication Date
DE60201055D1 true DE60201055D1 (en) 2004-09-30
DE60201055T2 DE60201055T2 (en) 2005-09-08

Family

ID=19774091

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60201055T Expired - Lifetime DE60201055T2 (en) 2001-10-01 2002-09-27 Hydraulic actuator for a closing arrangement

Country Status (5)

Country Link
US (1) US6751953B2 (en)
EP (1) EP1298273B1 (en)
AT (1) ATE274631T1 (en)
DE (1) DE60201055T2 (en)
NL (1) NL1019067C2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ543045A (en) * 2003-02-07 2007-07-27 Harry J Last Dual, coupled check valve for direct drive, reversible power sources for hydraulic systems
NL1023583C2 (en) * 2003-06-02 2004-12-03 Actuant Corp Hydraulic control device.
DE102005010637B4 (en) * 2005-03-08 2007-02-01 Bosch Rexroth Aktiengesellschaft Method of protection against pinching and anti-trap device
FR2894885B1 (en) * 2005-12-15 2008-03-14 Peugeot Citroen Automobiles Sa REMOVABLE ROOF SYSTEM AND MOTOR VEHICLE
US7513562B2 (en) * 2006-11-16 2009-04-07 Tech-Craft, Inc. Mechanism to attach and to raise a tonneau cover
US8087436B2 (en) * 2007-06-29 2012-01-03 Fastest, Inc. Modular connector
US20100232964A1 (en) * 2007-11-09 2010-09-16 David Geiger Electro-hydraulic actuator for controlling the pitch of a blade of a wind turbine
FR2972774B1 (en) * 2011-03-15 2016-01-01 Airbus Operations Sas ACTUATOR WITH ELECTRIC POWER AND METHOD OF CONTROLLING SUCH ACTUATOR.
JP6396071B2 (en) * 2014-05-02 2018-09-26 兵神装備株式会社 Fluid supply system and molding system
US9758359B2 (en) 2015-03-25 2017-09-12 K-Line Industries, Inc. Jack system
FR3049995B1 (en) * 2016-04-12 2018-08-17 Kuhn-Audureau Sa DEVICE FOR MANAGING THE HYDRAULIC DISTRIBUTION OF A VERIN
CN108071829A (en) * 2016-11-15 2018-05-25 定州四方诚信畜牧科技有限公司 A kind of new automatic breather valve

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1134608A (en) * 1911-07-20 1915-04-06 Nat Pneumatic Co Fluid-pressure door-operating device.
NL7103556A (en) * 1971-03-17 1972-09-19
US3916567A (en) * 1974-08-26 1975-11-04 Vapor Corp Obstruction sensor for pneumatic door operator
US4263746A (en) * 1979-07-13 1981-04-28 Eller Harry J Reversing circuit for a powered closure
DE4241764A1 (en) * 1992-12-11 1994-06-16 Hydrower Hydraulik Gmbh Hydraulic circuit for automatic repetitive operation of hydraulic cylinder - has direction control valve with cylinder stroke end detector for valve changeover control
AT403785B (en) 1996-04-24 1998-05-25 Hoerbiger Gmbh HYDRAULIC ACTUATING ARRANGEMENT
DE19641428C1 (en) 1996-10-08 1998-02-26 Bayerische Motoren Werke Ag Device for pivoting lid of car boot
AT405751B (en) * 1998-05-22 1999-11-25 Hoerbiger Gmbh ARRANGEMENT FOR HYDRAULICALLY OPERATING A REAR LID
NL1011362C2 (en) 1999-02-22 2000-08-25 Applied Power Inc Hydraulically operated cover assembly.
ES2168907A1 (en) * 1999-07-16 2002-06-16 Faiveley Espanola Obstacle detection system for pneumatic doors
AT409656B (en) * 1999-10-18 2002-10-25 Hoerbiger Hydraulik HYDRAULIC ACTUATING ARRANGEMENT
NL1014476C2 (en) 2000-02-23 2001-08-24 Applied Power Inc Hydraulic control device for a vehicle cover cap assembly.

Also Published As

Publication number Publication date
EP1298273B1 (en) 2004-08-25
US20030061811A1 (en) 2003-04-03
NL1019067C2 (en) 2003-04-02
DE60201055T2 (en) 2005-09-08
ATE274631T1 (en) 2004-09-15
EP1298273A1 (en) 2003-04-02
US6751953B2 (en) 2004-06-22

Similar Documents

Publication Publication Date Title
DE60201055D1 (en) Hydraulic actuator for locking assembly
US6116571A (en) Straight valve
ATE271671T1 (en) PRE-CONTROLLED CONTROL VALVE
GB2345712A (en) Full bore variable flow control device
ATE299255T1 (en) PRESSURE VALVE
ATE509837T1 (en) MOTORIZED VACUUM/PRESSURE PUMP
CA2471734A1 (en) Bathroom flushers with novel sensors and controllers
BR9507816A (en) Fluid valve and actuator combination and valve actuator device
ITRM20000484A1 (en) SOLENOID VALVE FOR DISPENSING A VARIABLE FLOW OF A FLUID.
CA2367528A1 (en) Apparatus for remote control of wellbore fluid flow
EP0913610A3 (en) Solenoid valve
KR950008998A (en) 3 position solenoid control valve
WO2007008233A3 (en) Valve with bellow
WO2002090804A3 (en) Sliding valve
DE50007032D1 (en) Hydraulically operated cover unit
SE9800229D0 (en) Fluid pressure release valve
SE9002222L (en) VALVE DEVICE, SPEC FOR PRESSURE AIR PULSES WITH VARIOUS OPERATING DATA
US5947690A (en) Actuator valve for pressure switch for a fluidic system
JP2003139270A (en) Opening and closing valve provided with operation detection mechanism of valve element
JPH0953365A (en) Door closer
HUP0204533A2 (en) Servo-controlled safety valve for toxic fluid container
KR970016251A (en) Electronically controlled valve device having valve opening ratio display function and control method thereof
CA2406488A1 (en) Combination poppet and gate valve
EP1205832A3 (en) Thermostatic valve
GB2415463B (en) Door closer

Legal Events

Date Code Title Description
8364 No opposition during term of opposition